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      <a href="/2019/05/24/技术博文/java8种基本类型取值范围/">java 8 种基本类型取值范围</a>
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    <p class="article-date">2019-05-24</p>
    
    
  <a href="/tags#技术博文">
    <span class="tag-code">技术博文</span>
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      java 8 种基本类型取值范围整数类 byte short int long
文本类 char
浮点类 double float
逻辑类 boolean

      
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      <a href="/2019/05/24/技术博文/break的一个另类用法/">break的一个另类用法</a>
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    <p class="article-date">2019-05-24</p>
    
    
  <a href="/tags#技术博文">
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      123456789101112131415public class Test &#123;    public static void main(String[] args) throws IOException &#123;        saveLabel: &#123;         ...
      
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      <a href="/2019/05/24/技术博文/java反射基础/">java反射基础</a>
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    <p class="article-date">2019-05-24</p>
    
    
  <a href="/tags#技术博文">
    <span class="tag-code">技术博文</span>
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      1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859JAVA反射机制是在运行状态中，对于任意一个类，都能够知道这个类的所有属性 ...
      
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      <a href="/2019/05/24/技术博文/gitchat讲座PPT/">gitchat 讲座 PPT</a>
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    <p class="article-date">2019-05-24</p>
    
    
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    <span class="tag-code">技术博文</span>
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      gitchat 讲座 PPT:1. 微服务架构深度解析与最佳实践.pdf
2. 如何利用微服务编排 APaaS 平台.pdf
3. 微服务架构下的监控实践.pdf

      
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      <a href="/2019/05/24/技术博文/javajs获得文件的后缀名/">java js 获得文件的后缀名</a>
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    <p class="article-date">2019-05-24</p>
    
    
  <a href="/tags#技术博文">
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      java js 获得文件的后缀名java 获得文件的后缀名
123String str = "12344.jpg";String pic = str.substring(str.lastIndexOf("."));System.out.println(pic);
js 获得文件的后缀名
12 ...
      
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      <a href="/2019/05/24/算法/Java实现链式操作/">Java实现链式操作</a>
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    <p class="article-date">2019-05-24</p>
    
    
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      1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253public class Persion &#123;    private int id;    ...
      
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      <a href="/2019/05/24/算法/javahash算法大全/">java hash 算法大全</a>
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    <p class="article-date">2019-05-24</p>
    
    
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      java hash 算法大全HashUtil 其实是一个 hash 算法的集合，此工具类中融合了各种 hash 算法。
方法这些算法包括：
1234567891011121314151617181920additiveHash 加法hashrotatingHash 旋转hashoneByOn ...
      
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      <a href="/2019/05/24/算法/java二分搜索算法/">java 二分搜索算法</a>
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    <p class="article-date">2019-05-24</p>
    
    
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      java 二分搜索算法有一数组 a[1000]存放了 1000 个数,这 1000 个数取自 1-999, 且只有两个相同的数,剩下的 998 个数不同, 写一个搜索算法找出相同的那个数的值（请用 JAVA 编程实现，注意空间效率和时间效率尽可能优化）。
解答：二分搜索算法 时间复杂度 O( ...
      
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      <a href="/2019/05/24/数据库持久化/mybatis开发神器mybatisplus使用教程/">mybatis 开发神器 mybatis plus 使用教程</a>
    </h2>
    <p class="article-date">2019-05-24</p>
    
    
  <a href="/tags#数据库持久化">
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      mybatis 开发神器 mybatis plus 使用教程mybatis-plus 优势
无侵入：只做增强不做改变，引入它不会对现有工程产生影响，如丝般顺滑
损耗小：启动即会自动注入基本 CURD，性能基本无损耗，直接面向对象操作
强大的 CRUD 操作：内置通用 Mapper、通用 Se ...
      
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      <a href="/2019/05/24/数据库持久化/mybatis常用方法/">mybatis 常用方法</a>
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    <p class="article-date">2019-05-24</p>
    
    
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    <span class="tag-code">数据库持久化</span>
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      mybatis 常用方法1234567891011121314//方法一：后来发现用in 的话 #改$&#123;&#125;还是可以直接查询的，不用foreach//方法二：List&lt;Integer&gt; roleids = Lists.newArrayList();for ( M ...
      
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